Let me know if you have an extra Prius fob. I just bought a car at auction and have no keys. I am looking for either the Silver backed key or the black prius backed key. Let me know.
Check with some locksmiths near to you. But there is more to it than just getting a FOB. That is just the "tip of the iceberg".
Probably not. I'm pretty sure that one working key is required to program additional ones. And without that, a replacement ignition board is required.......for a total cost near to $1000. Hopefully others will supply more details.